EP0308982A3 - Analog-to-digital converter having an excellent signal-to-noise ratio for small signals - Google Patents

Analog-to-digital converter having an excellent signal-to-noise ratio for small signals Download PDF

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Publication number
EP0308982A3
EP0308982A3 EP19880115804 EP88115804A EP0308982A3 EP 0308982 A3 EP0308982 A3 EP 0308982A3 EP 19880115804 EP19880115804 EP 19880115804 EP 88115804 A EP88115804 A EP 88115804A EP 0308982 A3 EP0308982 A3 EP 0308982A3
Authority
EP
European Patent Office
Prior art keywords
analog
signal
input
white noise
adder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19880115804
Other languages
German (de)
French (fr)
Other versions
EP0308982A2 (en
EP0308982B1 (en
Inventor
Akira C/O Nec Corporation Yukawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP24214187A external-priority patent/JPS6484920A/en
Priority claimed from JP24214287A external-priority patent/JPS6484921A/en
Priority claimed from JP62249448A external-priority patent/JPH082021B2/en
Application filed by NEC Corp filed Critical NEC Corp
Publication of EP0308982A2 publication Critical patent/EP0308982A2/en
Publication of EP0308982A3 publication Critical patent/EP0308982A3/en
Application granted granted Critical
Publication of EP0308982B1 publication Critical patent/EP0308982B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/326—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors
    • H03M3/328—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors using dither
    • H03M3/3287—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors using dither the dither being at least partially dependent on the input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/326—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors
    • H03M3/328—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors using dither
    • H03M3/33—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors using dither the dither being a random signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/456—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a first order loop filter in the feedforward path

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

An analog-to-digital converter includes an analog-to-­ digital converting circuit having at least an analog signal input terminal, an adder having a first input connected to the analog signal input terminal and a second input, and a comparator having an input coupled to receive an output of the adder and operating to generate a digital signal at a given sampling frequency. This digital signal is applied to the second input of the adder. There is further provided a a noise generator including an one-bit white noise generator connected to receive the digital signal outputted from the comparator for generating a one-bit white noise signal, and a circuit coupled to the white noise generator for outputting a signal indicative of a difference between values of two white noise signals at two continuous sampling points. This difference signal is added to the input of the comparator.
EP88115804A 1987-09-25 1988-09-26 Analog-to-digital converter having an excellent signal-to-noise ratio for small signals Expired - Lifetime EP0308982B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP242141/87 1987-09-25
JP24214187A JPS6484920A (en) 1987-09-25 1987-09-25 A/d converter
JP24214287A JPS6484921A (en) 1987-09-25 1987-09-25 A/d converter
JP242142/87 1987-09-25
JP62249448A JPH082021B2 (en) 1987-10-01 1987-10-01 A / D converter
JP249448/87 1987-10-01

Publications (3)

Publication Number Publication Date
EP0308982A2 EP0308982A2 (en) 1989-03-29
EP0308982A3 true EP0308982A3 (en) 1992-05-13
EP0308982B1 EP0308982B1 (en) 1995-09-06

Family

ID=27333009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115804A Expired - Lifetime EP0308982B1 (en) 1987-09-25 1988-09-26 Analog-to-digital converter having an excellent signal-to-noise ratio for small signals

Country Status (3)

Country Link
US (1) US5010347A (en)
EP (1) EP0308982B1 (en)
DE (1) DE3854414T2 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099239A (en) * 1989-09-21 1992-03-24 Xerox Corporation Multi-channel analogue to digital convertor
FI88980C (en) * 1991-01-09 1993-07-26 Nokia Mobile Phones Ltd Sigma delta modulator for D / A converters
US5144308A (en) * 1991-05-21 1992-09-01 At&T Bell Laboratories Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither
US5274375A (en) * 1992-04-17 1993-12-28 Crystal Semiconductor Corporation Delta-sigma modulator for an analog-to-digital converter with low thermal noise performance
US5488368A (en) * 1993-05-28 1996-01-30 Technoview Inc. A/D converter system and method with temperature compensation
US5359327A (en) * 1993-05-28 1994-10-25 Brown Eric W A/D converter system with interface and passive voltage reference source
US5376892A (en) * 1993-07-26 1994-12-27 Texas Instruments Incorporated Sigma delta saturation detector and soft resetting circuit
US5877907A (en) * 1995-11-22 1999-03-02 Fujitsu Limited Apparatus and method for demodulating data signals read from a recording medium
US5909188A (en) * 1997-02-24 1999-06-01 Rosemont Inc. Process control transmitter with adaptive analog-to-digital converter
SE509408C2 (en) 1997-05-27 1999-01-25 Ericsson Telefon Ab L M Apparatus and method for reducing periodic noise in a sigma-delta modulator
US5905453A (en) * 1997-08-04 1999-05-18 Motorola, Inc. Dithered sigma delta modulator having programmable full scale range adjustment
US6448912B1 (en) * 1998-10-29 2002-09-10 Micron Technology, Inc. Oversampled centroid A to D converter
DE19851637A1 (en) * 1998-11-10 2000-05-11 Bosch Gmbh Robert Sigma-delta modulator and method for suppressing a quantization error in a sigma-delta modulator
US6215432B1 (en) 1999-03-04 2001-04-10 Atmel Corporation Reducing digital switching noise in mixed signal IC's
US6411242B1 (en) * 2000-06-13 2002-06-25 Linear Technology Corporation Oversampling analog-to-digital converter with improved DC offset performance
US20020060605A1 (en) * 2000-09-22 2002-05-23 Kowkutla Venkateswar R. Amplifiers
DE10142191C2 (en) 2001-08-29 2003-08-28 Infineon Technologies Ag SD-ADC with digital dither signal processing
US20040228545A1 (en) * 2003-05-12 2004-11-18 Kwang-Bo Cho Multisampling with reduced bit samples
US6927717B1 (en) 2004-02-12 2005-08-09 Linear Technology Corporation Buffered oversampling analog-to-digital converter with improved DC offset performance
US7224305B2 (en) * 2004-06-08 2007-05-29 Telefonaktiebolaget L M Ericsson (Publ) Analog-to-digital modulation
US7224299B2 (en) * 2005-09-30 2007-05-29 Nxp, B.V. System and method for adjusting dither in a delta sigma modulator
CN100440733C (en) * 2005-12-31 2008-12-03 中国科学院声学研究所 A/D converter with high effective quantization to signal
US20090230769A1 (en) * 2006-06-15 2009-09-17 Koninklijke Philips Electronics N.V. method of balancing power consumption between loads
US7746257B2 (en) * 2008-05-07 2010-06-29 Cirrus Logic, Inc. Delta-sigma analog-to-digital converter circuit having reduced sampled reference noise
US8009077B1 (en) 2009-06-08 2011-08-30 Cirrus Logic, Inc. Delta-sigma analog-to-digital converter (ADC) circuit with selectively switched reference
CN102299874B (en) * 2010-06-24 2014-03-12 大唐移动通信设备有限公司 Acquisition method and device of link gains
US8873611B2 (en) * 2010-09-10 2014-10-28 Nec Corporation Transmitter, control method, computer program and delta-sigma modulator
US8981982B2 (en) * 2013-04-05 2015-03-17 Maxlinear, Inc. Multi-zone data converters
CN103634005B (en) * 2013-12-13 2017-06-06 戴祖渝 A kind of method of quantizing noise randomization in analog-digital converter
US9312875B1 (en) * 2015-06-26 2016-04-12 Intel IP Corporation Signal processing apparatus and method for processing a signal
WO2018109992A1 (en) 2016-12-14 2018-06-21 ソニーセミコンダクタソリューションズ株式会社 Delta-sigma modulator, electronic apparatus and method for controlling delta-sigma modulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516022A (en) * 1966-11-17 1970-06-02 Bell Telephone Labor Inc Delta modulation encoders with randomized idle circuit noise
US4034367A (en) * 1974-02-28 1977-07-05 Yokogawa Electric Works, Ltd. Analog-to-digital converter utilizing a random noise source
WO1982004508A1 (en) * 1981-06-12 1982-12-23 Inc Gould Enhanced delta modulation encoder
EP0167412A2 (en) * 1984-07-06 1986-01-08 British Aerospace Analog-to-digital conversion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011849B2 (en) * 1976-02-10 1985-03-28 日本電気株式会社 Offset compensation circuit
JPS5550738A (en) * 1978-10-05 1980-04-12 Nec Corp Decoding method of adaptability forecasting type differential pulse code and its unit
US4528551A (en) * 1979-11-28 1985-07-09 International Telephone And Telegraph Corporation Digital to analog converter employing sigma-delta modulation for use in telephone systems
US4509037A (en) * 1981-06-12 1985-04-02 Gould Inc. Enhanced delta modulation encoder
US4439756A (en) * 1982-01-20 1984-03-27 International Telephone And Telegraph Corporation Delta-Sigma modulator with switch capacitor implementation
US4542354A (en) * 1983-08-01 1985-09-17 Robinton Products, Inc. Delta-sigma pulse modulator with offset compensation
JPS62140518A (en) * 1985-12-13 1987-06-24 Advantest Corp A/d converter
AU588428B2 (en) * 1986-02-27 1989-09-14 Alcatel N.V. Converter circuit
US4746899A (en) * 1986-10-07 1988-05-24 Crystal Semiconductor Corporation Method for reducing effects of electrical noise in an analog-to-digital converter
US4775851A (en) * 1987-06-01 1988-10-04 Motorola, Inc. Multiplierless decimating low-pass filter for a noise-shaping A/D converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516022A (en) * 1966-11-17 1970-06-02 Bell Telephone Labor Inc Delta modulation encoders with randomized idle circuit noise
US4034367A (en) * 1974-02-28 1977-07-05 Yokogawa Electric Works, Ltd. Analog-to-digital converter utilizing a random noise source
WO1982004508A1 (en) * 1981-06-12 1982-12-23 Inc Gould Enhanced delta modulation encoder
EP0167412A2 (en) * 1984-07-06 1986-01-08 British Aerospace Analog-to-digital conversion

Also Published As

Publication number Publication date
EP0308982A2 (en) 1989-03-29
US5010347A (en) 1991-04-23
DE3854414T2 (en) 1996-04-18
DE3854414D1 (en) 1995-10-12
EP0308982B1 (en) 1995-09-06

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